/**
编写一个函数，其作用是将输入的字符串反转过来。输入字符串以字符数组 s 的形式给出。 

 不要给另外的数组分配额外的空间，你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。 

 

 示例 1： 

 
输入：s = ["h","e","l","l","o"]
输出：["o","l","l","e","h"]
 

 示例 2： 

 
输入：s = ["H","a","n","n","a","h"]
输出：["h","a","n","n","a","H"] 

 

 提示： 

 
 1 <= s.length <= 10⁵ 
 s[i] 都是 ASCII 码表中的可打印字符 
 

 Related Topics 双指针 字符串 👍 949 👎 0

*/

//leetcode submit region begin(Prohibit modification and deletion)
class Solution {
    public void reverseString(char[] s) {
        int l = 0;
        int r = s.length - 1;
        while(l < r){
            char temp = s[l];
            s[l] = s[r];
            s[r] = temp;
            l++;
            r--;
        }
    }
}
//leetcode submit region end(Prohibit modification and deletion)
